Extended cron is a frame-work of batch control providing following functions

[yass]

" Manage cron jobs by console tool. CLI and WEB tool can use. / Define job depedency and execute in order / Execute job exclusively if define resource lock. / Define jobnet dependency by using message / If execution server failed, execute jobnet on spare server "

[tmatsuu]

従来のcronのスケジュール機能を機能拡張してジョブスケジューラ的なことを実行するオープンソース実装らしい。開発者は日本の方っぽい。